公开(公告)号：US07512166B2

公开(公告)日：2009-03-31

申请号：US11565768

申请日：2006-12-01

申请人： Gap Youl Lyu ,  Kilhun Koo ,  Min Hee Kang

发明人： Gap Youl Lyu ,  Kilhun Koo ,  Min Hee Kang

IPC分类号： H01S3/00

CPC分类号： H01S5/0683 ,  H01S5/0085 ,  H01S5/06832

摘要： The present invention relates to an optical power and extinction ratio controlling device and method. An optical signal output from a light source is detected and optical power and extinction ratio of the light source are controlled. In detail, a feedback signal is provided to the light source to automatically control the bias current based on a DC signal output by a photodetector detecting the optical signal. Therefore, the optical output of the light source is maintained. Also, an optical signal output by the photodetector is converted into a predetermined times DC signal, and a feedback signal is provided to the light source to automatically control the modulation current based on the DC signal. Therefore, the extinction ratio of the light source is maintained. As a result, the extinction ratio is automatically maintained to satisfy the change of condition and the characteristic of light source, thereby maintaining quality optical outputs.

摘要翻译： 本发明涉及光功率消光比控制装置及方法。 检测从光源输出的光信号，并控制光源的光功率和消光比。 详细地，向光源提供反馈信号，以基于检测光信号的光电检测器输出的DC信号来自动控制偏置电流。 因此，维持光源的光输出。 此外，由光电检测器输出的光信号被转换为预定时间的DC信号，并且将反馈信号提供给光源，以基于DC信号自动控制调制电流。 因此，维持光源的消光比。 结果，自动维持消光比以满足条件和光源特性的变化，从而保持光输出的质量。

公开(公告)号：US20080128587A1

公开(公告)日：2008-06-05

申请号：US11565768

申请日：2006-12-01

申请人： Gap Youl Lyu ,  Kilhun Koo ,  Min Hee Kang

发明人： Gap Youl Lyu ,  Kilhun Koo ,  Min Hee Kang

IPC分类号： G05D25/02

CPC分类号： H01S5/0683 ,  H01S5/0085 ,  H01S5/06832

摘要： The present invention relates to an optical power and extinction ratio controlling device and method. An optical signal output from a light source is detected and optical power and extinction ratio of the light source are controlled. In detail, a feedback signal is provided to the light source to automatically control the bias current based on a DC signal output by a photodetector detecting the optical signal. Therefore, the optical output of the light source is maintained. Also, an optical signal output by the photodetector is converted into a predetermined times DC signal, and a feedback signal is provided to the light source to automatically control the modulation current based on the DC signal. Therefore, the extinction ratio of the light source is maintained. As a result, the extinction ratio is automatically maintained to satisfy the change of condition and the characteristic of light source, thereby maintaining quality optical outputs.

摘要翻译： 本发明涉及光功率消光比控制装置及方法。 检测从光源输出的光信号，控制光源的光功率和消光比。 详细地，向光源提供反馈信号，以基于检测光信号的光电检测器输出的DC信号来自动控制偏置电流。 因此，维持光源的光输出。 此外，由光电检测器输出的光信号被转换为预定时间的DC信号，并且将反馈信号提供给光源，以基于DC信号自动控制调制电流。 因此，维持光源的消光比。 结果，自动维持消光比以满足条件和光源特性的变化，从而保持光输出的质量。

公开(公告)号：US07619727B2

公开(公告)日：2009-11-17

申请号：US11447952

申请日：2006-06-07

申请人： Gap Youl Lyu ,  Kilhun Koo ,  Min Hee Kang ,  Ba Cao

发明人： Gap Youl Lyu ,  Kilhun Koo ,  Min Hee Kang ,  Ba Cao

IPC分类号： G01J1/42

CPC分类号： G01J1/4257 ,  G01J1/0488 ,  G01J1/4228 ,  G01J9/00

摘要： The present invention relates to a light wavelength and intensity measuring device. The device automatically measures a center wavelength of the light source and an intensity of the light corresponding to the center wavelength by using a main photodetector, at least one optical filter, and at least one sub photodetector when the light source is connected to the device. The main photodetector detects the intensity of the light applied by the light source, the optical filter transmits the light corresponding to a prediscriminated transmission wavelength, and the sub photodetector detects the intensity of the light transmitted through the optical filter. Therefore, the light intensity is more accurately measured by calibrating the intensity according to the wavelength.

公开(公告)号：US20090033923A1

公开(公告)日：2009-02-05

申请号：US11447952

申请日：2006-06-07

申请人： Gap Youl Lyu ,  Kilhun Koo ,  Min Hee Kang ,  Ba Cao

发明人： Gap Youl Lyu ,  Kilhun Koo ,  Min Hee Kang ,  Ba Cao

IPC分类号： G01J1/42

CPC分类号： G01J1/4257 ,  G01J1/0488 ,  G01J1/4228 ,  G01J9/00

摘要： The present invention relates to a light wavelength and intensity measuring device. The device automatically measures a center wavelength of the light source and an intensity of the light corresponding to the center wavelength by using a main photodetector, at least one optical filter, and at least one sub photodetector when the light source is connected to the device. The main photodetector detects the intensity of the light applied by the light source, the optical filter transmits the light corresponding to a prediscriminated transmission wavelength, and the sub photodetector detects the intensity of the light transmitted through the optical filter. Therefore, the light intensity is more accurately measured by calibrating the intensity according to the wavelength.

摘要翻译： 本发明涉及一种光波长和强度测量装置。 当光源连接到设备时，该设备通过使用主光电检测器，至少一个滤光器和至少一个子光电检测器自动测量光源的中心波长和对应于中心波长的光的强度。 主光电检测器检测由光源施加的光的强度，滤光器透射对应于未被鉴别的透射波长的光，并且子光电检测器检测透过滤光器的光的强度。 因此，通过根据波长校准强度来更精确地测量光强度。

公开(公告)号：US07986886B2

公开(公告)日：2011-07-26

申请号：US12179851

申请日：2008-07-25

申请人： Chan Yong Park ,  Gap Youl Lyu ,  Kil Hun Koo ,  Min Hee Kang

发明人： Chan Yong Park ,  Gap Youl Lyu ,  Kil Hun Koo ,  Min Hee Kang

IPC分类号： H04B10/08 ,  H04B10/06

CPC分类号： H04B10/675

摘要： An optical signal detector is provided that detects an optical signal from an optical source using a plurality of optical sensors having different wavelength selectivities, thereby determining the peak wavelength of the optical signal and measuring the power of an optical signal corresponding to the peak wavelength. According to the optical signal detector, separate optical filters are not required and space and costs attributable to the installation of the optical filters can be saved, and thus there are effects in that the overall size and manufacturing costs of the device can be reduced.

摘要翻译： 提供一种光信号检测器，其使用具有不同波长选择性的多个光学传感器来检测来自光源的光信号，从而确定光信号的峰值波长并测量与峰值波长对应的光信号的功率。 根据光信号检测器，不需要单独的光学滤光器，并且可以节省由于安装光学滤波器而导致的空间和成本，并且因此可以降低器件的整体尺寸和制造成本。

公开(公告)号：US06748172B2

公开(公告)日：2004-06-08

申请号：US09746635

申请日：2000-12-21

申请人： Gap Youl Lyu

发明人： Gap Youl Lyu

IPC分类号： H04J1402

CPC分类号： H04B10/572 ,  H04B10/506 ,  H04B10/564 ,  H04J14/02

摘要： A multi-channel light source generator has a pumping laser source for generating a pumping laser having a predetermined wavelength, a multi-channel light source generating device for generating multi-channel light sources using the pumping laser, a light separating device for separating the pumping laser and the multi-channel light sources, a demultiplexing device for separating the multi-channel light sources into a plurality of individual light sources, an intensity adjusting device for adjusting an intensity of the individual light sources, and a multiplexing device for combining the individual light sources outputted from the intensity adjusting device.

摘要翻译： 多通道光源发生器具有用于产生具有预定波长的泵浦激光器的泵浦激光源，用于使用该泵浦激光器产生多通道光源的多通道光源产生装置，用于分离泵浦 激光器和多通道光源，用于将多通道光源分离成多个单独的光源的解复用装置，用于调节各个光源的强度的强度调节装置，以及用于组合各个光源的多路复用装置 从强度调节装置输出的光源。

公开(公告)号：US06369926B1

公开(公告)日：2002-04-09

申请号：US09136714

申请日：1998-08-19

申请人： Gap Youl Lyu ,  Hyun Jae Lee ,  Seo Yeon Park ,  Jong Hyun Lee

发明人： Gap Youl Lyu ,  Hyun Jae Lee ,  Seo Yeon Park ,  Jong Hyun Lee

IPC分类号： H04B1004

CPC分类号： H04B10/506 ,  H04B10/564 ,  H04B10/572

摘要： A multichannel light source wavelength and strength stabilizing apparatus and a method thereof are disclosed. The apparatus includes a first proportional/integrator for receiving an output signal from the error detector, detecting a value proportional thereto, integrating the detected proportional value, generating a signal corresponding to the optimum feedback circuit, and outputting to the temperature controller; a current controller for providing the current capable of controlling the light strength in accordance with the signal inputted to the light source and stabilizing the light strength; a second optical coupling unit for dividing the output signal from the first optical coupling unit; a photodetector for converting the strength of a light among the output signals from the second optical coupling unit into an electrical signal; and a second proportional/integration unit for detecting a proportional value of the output signal from the optical detector, integrating the detected proportional value, generating a signal corresponding to the optimum feedback circuit, and outputting to the current controller.

摘要翻译： 公开了一种多通道光源波长和强度稳定装置及其方法。 该装置包括：第一比例/积分器，用于接收来自误差检测器的输出信号，检测与其成比例的值，积分检测到的比例值，产生对应于最佳反馈电路的信号，并输出到温度控制器; 电流控制器，用于根据输入到光源的信号提供能够控制光强度的电流并稳定光强度; 第二光耦合单元，用于分割来自第一光耦合单元的输出信号; 用于将来自第二光耦合单元的输出信号中的光的强度转换为电信号的光电检测器; 以及第二比例/积分单元，用于检测来自光学检测器的输出信号的比例值，积分检测到的比例值，产生对应于最佳反馈电路的信号，并输出到电流控制器。

公开(公告)号：US6118562A

公开(公告)日：2000-09-12

申请号：US986267

申请日：1997-12-05

申请人： Hyun Jae Lee ,  Gap Youl Lyu ,  Seo Yeon Park

发明人： Hyun Jae Lee ,  Gap Youl Lyu ,  Seo Yeon Park

IPC分类号： H04J14/02 ,  H01S5/0687 ,  H01S5/40 ,  H04B10/50 ,  H04B10/572

CPC分类号： H01S5/0687 ,  H04B10/506 ,  H04B10/572 ,  H01S5/4087

摘要： A wavelength aligning apparatus using an arrayed waveguide grating (AWG), and particularly, to a wavelength aligning apparatus using an arrayed waveguide grating which is capable of aligning optical sources using a transmission characteristic of an arrayed waveguide grating in a wavelength alignment method. The apparatus includes a signal generator for applying a signal spaced-apart at a predetermined interval near a predetermined frequency to a bias current of the light source and dithering a central wavelength of each light source, an arrayed waveguide grating for providing a reference wavelength causing a variation difference from the central portion due to a dithering of the central wavelength, a temperature controller for determining a reference wave length by constantly maintaining a temperature of the arrayed waveguide grating, an optical fiber coupler disposed in an output terminal of the arrayed waveguide grating for dividing the signal into a transmission signal and an incoming signal, a plurality of locking amplifiers and a proportional/integration/differentiating unit for computing a bias current corresponding to the detected error signal, and a superposing unit for superposing the computed bias current and a signal from the signal generator for output to the laser diode driver.

摘要翻译： 使用阵列波导光栅（AWG）的波长对准装置，特别涉及使用阵列波导光栅的波长对准装置，该阵列波导光栅能够使用波长对准方法中的阵列波导光栅的透射特性对准光源。 该装置包括：信号发生器，用于以预定频率以预定间隔间隔地附加到光源的偏置电流并抖动每个光源的中心波长的信号发生器，用于提供参考波长的阵列波导光栅， 由于中心波长的抖动引起的与中心部分的变化差异，用于通过不断维持阵列波导光栅的温度来确定参考波长的温度控制器，布置在阵列波导光栅的输出端中的光纤耦合器 将信号分成传输信号和输入信号，多个锁定放大器和用于计算与检测到的误差信号相对应的偏置电流的比例/积分/微分单元，以及叠加单元，用于叠加计算出的偏置电流和信号 从信号发生器输出到激光二极管驱动 r。